Brand plays record executive Lonny in a star-studded cast, who include Alec Baldwin and Julianne Hough.

Dead ringer: Tom's new appearance very similar to Mark Wahlberg's look, when he played the character of Chris 'Izzy' Cole in the 2001 film, Rock Star

The story follows a young rocker hungry for his big break and a small town girl who following her dreams in Hollywood.

They both end up on the LA rock scene just as a legendary Hollywood venue is facing its demise.

Earlier in the month, Brand tweeted a photograph of Baldwin on the set, with the 30 Rock star also looking distinctly different from his usual TV persona.

Clad in a two-toned denim vest, aviator sunglasses and long blonde surfer-inspired hair, it was certainly a unique look for the actor.

Doppelgänger: Tom's co-star Russell Brand also looks like dead ringer for Motley Crue rocker Nikki Sixx in the film

Cruise's look in the film is also a far-cry different from his attire earlier this week when he was spotted spending some quality family time with Katie and adorable little Suri.

The couple looked as though they had rolled off the sofa and straight into the car during the public outing.

Both the actress and her husband were dressed ultra-casually in their comfy leisurewear during a trip to a film studio with Suri.

Transformations: Tom's other co-stars Alec Baldwin and Julianne Hough also look completely different in their costumes and make-up

With her mismatched lilac tracksuit bottoms and peach-coloured hooded top, Katie resembled a scruffy teenager in her outfit which she completed with a pair of grey cardy pull on Uggs and a cream scarf.

Meanwhile Tom didn't fare much better in the fashion stakes, wearing a grey hooded top, navy trackie bottoms with a grey T-shirt hanging out over the top.

He finished off the slovenly ensemble with a pair of Adidas Air Retro basketball shoes and a white fedora.

Relaxed: Cruise earlier this week, spending some quality family time with wife Katie Holmes and their daughter Suri